This gear reduction consists of Polaris part #’s 3235774 and 3235989, also known as the 2 Seater Low Gear Reduction.  It is a 29/64 tooth combination, which came in most 2017-2020 2 seater RZR XP Turbo transmissions.  These gears can be installed in some 4 seater RZR Turbo transmissions to reduce only the low gear.  This reduction is not as low as the Ranger Low Gear.  We highly suggest you contact us before ordering gears unless you are absolutely sure what part numbers you are needing.  This is because of the variations in gear reductions from the factory and compatibility.  There is no warranty on Polaris gears and no returns.  This product is not eligible for any discounts.